EP0015553A1 - Méthode et dispositif pour déterminer la position du support d'impression dans une imprimante rapide - Google Patents

Méthode et dispositif pour déterminer la position du support d'impression dans une imprimante rapide Download PDF

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Publication number
EP0015553A1
EP0015553A1 EP80101124A EP80101124A EP0015553A1 EP 0015553 A1 EP0015553 A1 EP 0015553A1 EP 80101124 A EP80101124 A EP 80101124A EP 80101124 A EP80101124 A EP 80101124A EP 0015553 A1 EP0015553 A1 EP 0015553A1
Authority
EP
European Patent Office
Prior art keywords
platen
medium
carriage
detected
left hand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP80101124A
Other languages
German (de)
English (en)
Inventor
Egon A. Pedersen
Dennis A. Tilton
Rene Peerboom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VYDEC Inc
Original Assignee
VYDEC Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VYDEC Inc filed Critical VYDEC Inc
Publication of EP0015553A1 publication Critical patent/EP0015553A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/42—Scales and indicators, e.g. for determining side margins

Definitions

  • the invention relates to a method and an apparatus for determining the position of the printing medium in a high speed printer.
  • High-speed printers are widely used in industry for such diverse applications as output devices for data-processing systems, stand-alone word-processing terminals, or interactive terminals for time-sharing systems.
  • Such printers are called upon to operate in an automatic or semi-automatic mode, that is to say, with only occasional intervention from a human operator.
  • the printer determines whether or not the printing medium to be used, typically a sheet of paper, has been properly fed into the printer or, if properly . fed at the beginning of the print cycle, has not subsequently gone askew. If, as is often the case, the printer is typing information onto a pre-printed form, it is also important to accurately register the beginning of each print cycle with the preprinted regions of the form.
  • the printing medium to be used typically a sheet of paper
  • the above and other objectives are attained in the instant invention which comprises an apparatus for detecting at least one of the edges of a printing medium which is positioned proximate the platen of a printer, the printing medium and platen having differing co-efficients of reflection to incident radiant energy.
  • the apparatus comprises means for directing a beam of radiant energy towards the platen and means for detecting any of the beam of radiant energy as is reflected off either the platen or the printing medium.
  • the apparatus also includes means for inducing relative motion between the platen and the beam directing and beam detecting means and means, responsive to the output of the beam detecting means for terminating the relative motion whenever a significant transition is detected in the output from the beam detecting means.
  • Figure 1 depicts a partially schematic partially isometric, "exploded" view of a portion of a typical printer which is useful in explaining the principles of the instant invention.
  • the printer shown in this Figure is not intended to represent any specific machine and it will be recognized that for the sake of clarity many structural components have been omitted from the drawing. However, the omitted elements are entirely conventional and form no part of the claimed invention.
  • printer 10 includes a platen 11 for receiving a suitable printing medium, for example a sheet of paper 12.
  • a motor 13 connected to the shaft of platen 11, intermittently advances the paper 12 upon receipt of a line-feed command from a control circuit 14, via line 16.
  • Carriage 18 is advanced along slide bar 17 by means of a stainless steel cable 19 which is secured at both ends to the carriage and which passes over a pair of guide pulleys 21 and 22 located at each end of the platen.
  • pulley 22 is shown connected to the shaft of a second motor 23.
  • Motor 23 is connected to control circuit 14 which sends a signal to motor 23 to advance the carriage after each character has been printed on paper 12.
  • a radiant energy source 24 and a radiant energy detector 26 are mounted to, and travel with, carriage 18.
  • the radiant energy which is emitted by source 24 (and detected by detector 26) is visble light.
  • the light beam 27 from source 24 impinges upon platen 11 and/or the paper 12 and is reflected therefrom back towards the detector 26.
  • the output from detector 26 is connected, via a lead 27', to an edge detector circuit 28 which also connects to an input of control circuit 14.
  • platen 11 is comprised of a black, rubber material and, hence, has poor reflectivity to visible radiation.
  • the paper 12, on the other hand, is typically white and, hence, has a high reflectivity. Detector 26 will, thus, generate a clearly defined signal whenever carriage 18 travels over a region of the platen which contains an edge of the paper 12.
  • Light source 24 may comprise, for example, a light emitting diode, a solid state laser or an incandescent bulb.
  • Detector 26 may comprise a photo-diode or a photo-transistor. It will be appreciated that the light that is emitted from source 24 need not necessarily lie in the visible portion of the spectrum and may, for example, fall within the infra-red or ultra-violet portions of the spectrum. Indeed, in its broader aspects, the radiant energy which is directed onto the platen could comprise radio frequency energy, e.g.
  • a microwave beam, or even ultrasonic energy provided, of course, that the reflective properties of the platen and paper to the particular type of radiant energy employed are such that the energy which is reflected back into the detector is sufficiently / when the carriage moves from over the platen different to the paper that edge detector 28 can determine, in fact, that a transition has occured.
  • the source and detector may be connected to the upper end of the carriage by means of some suitable waveguide, for example, an optical fiber in the case of visible light.
  • FIG. 2 and 3 Such an arrangement is shown, for example, in Figures 2 and 3 wherein a housing 31, curved at is upper end and fastened to the print carriage, supports detector 26 and light source 24 at its lower end.
  • a first fiber optic bundle 32 is optically interfaced at one end of the source 24 while a second fiber optic bundle 33 is similarly interfaced to the detector 26.
  • the other ends of bundles 32 and 33 are merged together to form a semi-randomized bundle 34, which is approximately 2 mm (0.080") in diameter in the illustrative embodiment.
  • the light from source 24 is carried by the fibers of bundle 32 up to the top of the carriage where it is reflected off the paper, if present, and carried back down the fibers of bundle 33 to detector 26.
  • the entire arrangement, including housing 31, is fastened to the print carriage and travels along with the carriage as it steps along the slide bar 17.
  • Electrical connection of source 24 and detector 26 is made by means of a four pin connector 36 and some suitable flexible cable, the other end of which terminates in edge detector 28.
  • Figure 4 depicts the circuitry of edge detector 28 in greater detail.
  • source 24 comprises a light-emitting diode connected, via connector 36, between ground and a 5 volt source in detector 28.
  • Detector 26 comprises, for example, an STPT-1520 photo transistor connected, via connector 36, between a 5 volt source and the non-inverting input of an LM 311 operational amplifier 41 in detector 28.
  • the output of amplifier 41 is connected as an input to control circuit 14 and will be high when detector 26 is biased on by light reflected from the paper in the printer.
  • control circuit 14 will comprise the micro-processor chip, and its associated support chips, with the desired program that the printer it to follow stored in ROM.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Handling Of Sheets (AREA)
EP80101124A 1979-03-07 1980-03-06 Méthode et dispositif pour déterminer la position du support d'impression dans une imprimante rapide Withdrawn EP0015553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1834579A 1979-03-07 1979-03-07
US18345 1987-02-24

Publications (1)

Publication Number Publication Date
EP0015553A1 true EP0015553A1 (fr) 1980-09-17

Family

ID=21787462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101124A Withdrawn EP0015553A1 (fr) 1979-03-07 1980-03-06 Méthode et dispositif pour déterminer la position du support d'impression dans une imprimante rapide

Country Status (2)

Country Link
EP (1) EP0015553A1 (fr)
AU (1) AU5620080A (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505682A1 (de) * 1984-02-20 1985-08-22 Sharp K.K., Osaka Druckgut-anpresseinrichtung fuer einen drucker
EP0168734A2 (fr) * 1984-07-09 1986-01-22 Sharp Kabushiki Kaisha Système de chargement en papier utilisable dans une imprimante
DE3628528A1 (de) * 1985-08-26 1987-03-05 Canon Kk Laserstrahldrucker
EP0430678A2 (fr) * 1989-11-30 1991-06-05 Ncr International Inc. Imprimante pour livret d'épargne avec mécanisme de détection de ligne
US5076719A (en) * 1989-05-31 1991-12-31 Fujitsu Limited Printing apparatus having automatic loading function to avoid print medium corner snagging
EP0496300A2 (fr) * 1991-01-19 1992-07-29 Seikosha Co., Ltd. Méthode de détection de la longueur d'une feuille de papier d'une imprimante
EP0763784A2 (fr) * 1995-09-13 1997-03-19 Seiko Epson Corporation Procédé de détection de partie terminale d'un papier d'enregistrement dans un appareil d'enregistrement et appareil de détection pour une partie terminale
EP0875392A1 (fr) * 1993-11-01 1998-11-04 Hewlett-Packard Company Imprimantes de type navette et méthodes pour sa mise en oeuvre
US6079892A (en) * 1995-09-13 2000-06-27 Seiko Epson Corporation Method for detecting an end portion of a recording medium in a recording apparatus and end portion detection apparatus
EP1450210A1 (fr) * 2003-02-21 2004-08-25 Heidelberger Druckmaschinen Aktiengesellschaft Appareil et méthode pour détecter le bord d'un matériau d'enregistrement
WO2005075330A2 (fr) * 2004-01-30 2005-08-18 Zih Corp. Capteur de bord de milieu a auto-etalonnage
WO2005120850A2 (fr) * 2004-06-07 2005-12-22 Safe Id Solutions Ag Procede et dispositif d'impression dans un document
US7057196B2 (en) 2003-02-14 2006-06-06 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for detecting the edge of a recording material
EP1870363A1 (fr) * 2004-01-30 2007-12-26 ZIH Corp. Capteur de bord de support d'auto-étalonnage
EP2474714A1 (fr) 2010-12-23 2012-07-11 C.R.F. Società Consortile per Azioni Moteur à combustion interne doté d'une paroi masquant la zone de rideau des vannes d'admission
CN103057261A (zh) * 2011-10-24 2013-04-24 致伸科技股份有限公司 用于边缘侦测装置的控制方法与控制装置
CN104555517A (zh) * 2014-12-26 2015-04-29 合肥彩虹蓝光科技有限公司 一种led芯片多功能自动寻边器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779440A (en) * 1972-04-20 1973-12-18 Ibm Form run-out and jam detector for printer
US4034209A (en) * 1971-12-08 1977-07-05 Casio Computer Co., Ltd. Recording device
FR2409155A1 (fr) * 1977-11-22 1979-06-15 Wordplex Ltd A E S Perfectionnements apportes a des dispositifs d'impression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034209A (en) * 1971-12-08 1977-07-05 Casio Computer Co., Ltd. Recording device
US3779440A (en) * 1972-04-20 1973-12-18 Ibm Form run-out and jam detector for printer
FR2409155A1 (fr) * 1977-11-22 1979-06-15 Wordplex Ltd A E S Perfectionnements apportes a des dispositifs d'impression

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 10, March 1978, pages 3996/3997. W.J. WIPKE: "Right hand margin set and print inhibit". *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 11a, April 1978, pages 4266/4269. E.T. BROWN et al.: "Side-of-forms, end-of-forms, and forms jam-detection scheme for printers". *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505682A1 (de) * 1984-02-20 1985-08-22 Sharp K.K., Osaka Druckgut-anpresseinrichtung fuer einen drucker
EP0168734A2 (fr) * 1984-07-09 1986-01-22 Sharp Kabushiki Kaisha Système de chargement en papier utilisable dans une imprimante
EP0168734A3 (en) * 1984-07-09 1987-08-05 Sharp Kabushiki Kaisha Paper loading system for use in a printer paper loading system for use in a printer
DE3628528A1 (de) * 1985-08-26 1987-03-05 Canon Kk Laserstrahldrucker
US5076719A (en) * 1989-05-31 1991-12-31 Fujitsu Limited Printing apparatus having automatic loading function to avoid print medium corner snagging
US5167461A (en) * 1989-05-31 1992-12-01 Fujitsu Limited Printing apparatus having automatic loading function to avoid print medium corner snagging
EP0430678A2 (fr) * 1989-11-30 1991-06-05 Ncr International Inc. Imprimante pour livret d'épargne avec mécanisme de détection de ligne
EP0430678A3 (en) * 1989-11-30 1991-08-14 Ncr Corporation Passbook printer with line find mechanism
EP0496300A2 (fr) * 1991-01-19 1992-07-29 Seikosha Co., Ltd. Méthode de détection de la longueur d'une feuille de papier d'une imprimante
EP0496300A3 (en) * 1991-01-19 1992-12-16 Seikosha Co., Ltd. Method of detecting a length of sheet of a printer
EP0875392A1 (fr) * 1993-11-01 1998-11-04 Hewlett-Packard Company Imprimantes de type navette et méthodes pour sa mise en oeuvre
EP0763784A2 (fr) * 1995-09-13 1997-03-19 Seiko Epson Corporation Procédé de détection de partie terminale d'un papier d'enregistrement dans un appareil d'enregistrement et appareil de détection pour une partie terminale
US6079892A (en) * 1995-09-13 2000-06-27 Seiko Epson Corporation Method for detecting an end portion of a recording medium in a recording apparatus and end portion detection apparatus
EP0763784A3 (fr) * 1995-09-13 1997-06-04 Seiko Epson Corp Procédé de détection de partie terminale d'un papier d'enregistrement dans un appareil d'enregistrement et appareil de détection pour une partie terminale
US7057196B2 (en) 2003-02-14 2006-06-06 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for detecting the edge of a recording material
US7126146B2 (en) 2003-02-14 2006-10-24 Heidelberger Druckmaschinen Ag Device and method for detecting the edge of a recording material
EP1450210A1 (fr) * 2003-02-21 2004-08-25 Heidelberger Druckmaschinen Aktiengesellschaft Appareil et méthode pour détecter le bord d'un matériau d'enregistrement
US6915743B2 (en) 2003-02-21 2005-07-12 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for detecting the edge of a recording material
US7391043B2 (en) 2004-01-30 2008-06-24 Zih Corp. Self calibrating media edge sensor
WO2005075330A3 (fr) * 2004-01-30 2005-11-24 Zih Corp Capteur de bord de milieu a auto-etalonnage
EP1870363A1 (fr) * 2004-01-30 2007-12-26 ZIH Corp. Capteur de bord de support d'auto-étalonnage
WO2005075330A2 (fr) * 2004-01-30 2005-08-18 Zih Corp. Capteur de bord de milieu a auto-etalonnage
WO2005120850A3 (fr) * 2004-06-07 2006-02-23 Secure Print Systems Procede et dispositif d'impression dans un document
WO2005120850A2 (fr) * 2004-06-07 2005-12-22 Safe Id Solutions Ag Procede et dispositif d'impression dans un document
EP2474714A1 (fr) 2010-12-23 2012-07-11 C.R.F. Società Consortile per Azioni Moteur à combustion interne doté d'une paroi masquant la zone de rideau des vannes d'admission
CN103057261A (zh) * 2011-10-24 2013-04-24 致伸科技股份有限公司 用于边缘侦测装置的控制方法与控制装置
CN104555517A (zh) * 2014-12-26 2015-04-29 合肥彩虹蓝光科技有限公司 一种led芯片多功能自动寻边器

Also Published As

Publication number Publication date
AU5620080A (en) 1980-10-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19811118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TILTON, DENNIS A.

Inventor name: PEERBOOM, RENE

Inventor name: PEDERSEN, EGON A.